Working in the other direction, I think it's useful to look at what actually kills cells - and then try to avoid doing that. From my own experience, I would say that damage is done to cells at both high charge and low charge states - the actual damage done is possibly different in each case, but the...

The way that the UltraSmartCharger works is to use high frequency PWM to step down the voltage (and increase the current) from power supply - the effective output that the cell should be seeing is a constant current with a little bit of ripple. I don't think that I've done any charging at 1400 mA, s...

Unfortunately, I don't think that these cells are still available for purchase anywhere, so this probably isn't of too much use to anyone any more... I did leave a pair of these Ikea cells sitting for 12 months - one dropped down to 1056 mAh - the other dropped to 454 mAh - I suspect that the later ...

I'm not sure what the effect of using duty cycle on the charging current has on the number of cycles that can be achieved. In my opinion, using a higher current with a reduced duty cycle will lead to higher cell temperatures which I would expect to be detrimental to the number of cycles that can be ...